C=πd=2πr
S=πr²
V=π×r²×h
式中:C—
圆周长,S—
圆面积,V—体积,r—半径,d—直径,h—高,π—圆周率
圆柱的高h=3.6m,直径d=30cm=0.3m,半径r=30/2 cm=0.3/2 m
圆柱的表面积(侧面积+顶+底):
S=πd×h+2×πr²=3.14×0.3×3.6+2×(3.14×0.3/2×0.3/2)=3.5325平方米
圆柱的高h=3.6m,直径d=30cm,半径r=30/2 cm=0.3/2 m,圆柱的体积:
V==π×r²×h=3.14×0.3/2×0.3/2×3.6=0.25434立方米